/*
 * format - jQuery plugin to pretty-print or minify text in XML, JSON, CSS and SQL formats.
 * https://github.com/zachofalltrades/jquery.format
 *
 * Version - 0.1
 * Copyright (c) 2013 Zach Shelton
 * http://zachofalltrades.net
 *
 * Based on vkbeautify by Vadim Kiryukhin
 * http://www.eslinstructor.net/vkbeautify/
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 */
(function($) {

    /**
     * utility function called from constructor of Formatter
     */
    function createShiftArr(step) {
        var space = '    ';
        if (isNaN(parseInt(step))) { // argument is string
            space = step;
        } else { // argument is integer
            space = new Array(step + 1).join(' '); //space is result of join (a string), not an array
        }
        var shift = ['\n']; // array of shifts
        for (var ix = 0; ix < 100; ix++) {
            shift.push(shift[ix] + space);
        }
        return shift;
    };

    /**
     *
     */
    function isSubquery(str, parenthesisLevel) {
        return parenthesisLevel - (str.replace(/\(/g, '').length - str.replace(/\)/g, '').length);
    };

    /**
     *
     */
    function split_sql(str, tab) {
        return str.replace(/\s{1,}/g, " ")
            .replace(/ AND /ig, "~::~" + tab + tab + "AND ")
            .replace(/ BETWEEN /ig, "~::~" + tab + "BETWEEN ")
            .replace(/ CASE /ig, "~::~" + tab + "CASE ")
            .replace(/ ELSE /ig, "~::~" + tab + "ELSE ")
            .replace(/ END /ig, "~::~" + tab + "END ")
            .replace(/ FROM /ig, "~::~FROM ")
            .replace(/ GROUP\s{1,}BY/ig, "~::~GROUP BY ")
            .replace(/ HAVING /ig, "~::~HAVING ")
            //.replace(/ SET /ig," SET~::~")
            .replace(/ IN /ig, " IN ")
            .replace(/ JOIN /ig, "~::~JOIN ")
            .replace(/ CROSS~::~{1,}JOIN /ig, "~::~CROSS JOIN ")
            .replace(/ INNER~::~{1,}JOIN /ig, "~::~INNER JOIN ")
            .replace(/ LEFT~::~{1,}JOIN /ig, "~::~LEFT JOIN ")
            .replace(/ RIGHT~::~{1,}JOIN /ig, "~::~RIGHT JOIN ")
            .replace(/ ON /ig, "~::~" + tab + "ON ")
            .replace(/ OR /ig, "~::~" + tab + tab + "OR ")
            .replace(/ ORDER\s{1,}BY/ig, "~::~ORDER BY ")
            .replace(/ OVER /ig, "~::~" + tab + "OVER ")
            .replace(/\(\s{0,}SELECT /ig, "~::~(SELECT ")
            .replace(/\)\s{0,}SELECT /ig, ")~::~SELECT ")
            .replace(/ THEN /ig, " THEN~::~" + tab + "")
            .replace(/ UNION /ig, "~::~UNION~::~")
            .replace(/ USING /ig, "~::~USING ")
            .replace(/ WHEN /ig, "~::~" + tab + "WHEN ")
            .replace(/ WHERE /ig, "~::~WHERE ")
            .replace(/ WITH /ig, "~::~WITH ")
            //.replace(/\,\s{0,}\(/ig,",~::~( ")
            //.replace(/\,/ig,",~::~"+tab+tab+"")
            .replace(/ ALL /ig, " ALL ")
            .replace(/ AS /ig, " AS ")
            .replace(/ ASC /ig, " ASC ")
            .replace(/ DESC /ig, " DESC ")
            .replace(/ DISTINCT /ig, " DISTINCT ")
            .replace(/ EXISTS /ig, " EXISTS ")
            .replace(/ NOT /ig, " NOT ")
            .replace(/ NULL /ig, " NULL ")
            .replace(/ LIKE /ig, " LIKE ")
            .replace(/\s{0,}SELECT /ig, "SELECT ")
            .replace(/\s{0,}UPDATE /ig, "UPDATE ")
            .replace(/ SET /ig, " SET ")
            .replace(/~::~{1,}/g, "~::~")
            .split('~::~');
    };


    var Formatter = function(options) {
        this.init(options);
        //TODO - if options object maps any functions, add them as appropriately named methods
        var methodName = this.options.method;
        if (!$.isFunction(this[methodName])) {
            $.error("'" + methodName + "' is not a Formatter method.");
        };
        this.format = function(text) { //alias to currently selected method
            return this[this.options.method].call(this, text);
        };
    };


    /**
     * putting the methods into the prototype instead of the constructor method
     * enables more efficient on-the-fly creation of Formatter instances
     */
    Formatter.prototype = {
        options: {},

        init: function(options) {
            this.options = $.extend({}, $.fn.format.defaults, options);
            this.step = this.options.step;
            this.preserveComments = this.options.preserveComments;
            this.shift = createShiftArr(this.step);
        },

        xml: function(text) {
            var ar = text.replace(/>\s{0,}</g, "><")
                .replace(/</g, "~::~<")
                .replace(/\s*xmlns\:/g, "~::~xmlns:")
                .replace(/\s*xmlns\=/g, "~::~xmlns=")
                .split('~::~'),
                len = ar.length,
                inComment = false,
                deep = 0,
                str = '',
                ix = 0;

            for (ix = 0; ix < len; ix++) {
                // start comment or <![CDATA[...]]> or <!DOCTYPE //
                if (ar[ix].search(/<!/) > -1) {
                    str += this.shift[deep] + ar[ix];
                    inComment = true;
                    // end comment  or <![CDATA[...]]> //
                    if (ar[ix].search(/-->/) > -1 || ar[ix].search(/\]>/) > -1 || ar[ix].search(/!DOCTYPE/) > -1) {
                        inComment = false;
                    }
                } else
                    // end comment  or <![CDATA[...]]> //
                    if (ar[ix].search(/-->/) > -1 || ar[ix].search(/\]>/) > -1) {
                        str += ar[ix];
                        inComment = false;
                    } else
                        // <elm></elm> //
                        if (/^<\w/.exec(ar[ix - 1]) && /^<\/\w/.exec(ar[ix]) &&
                            /^<[\w:\-\.\,]+/.exec(ar[ix - 1]) == /^<\/[\w:\-\.\,]+/.exec(ar[ix])[0].replace('/', '')) {
                            str += ar[ix];
                            if (!inComment) deep--;
                        } else
                            // <elm> //
                            if (ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) == -1 && ar[ix].search(/\/>/) == -1) {
                                str = !inComment ? str += this.shift[deep++] + ar[ix] : str += ar[ix];
                            } else
                                // <elm>...</elm> //
                                if (ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) > -1) {
                                    str = !inComment ? str += this.shift[deep] + ar[ix] : str += ar[ix];
                                } else
                                    // </elm> //
                                    if (ar[ix].search(/<\//) > -1) {
                                        str = !inComment ? str += this.shift[--deep] + ar[ix] : str += ar[ix];
                                    } else
                                        // <elm/> //
                                        if (ar[ix].search(/\/>/) > -1) {
                                            str = !inComment ? str += this.shift[deep] + ar[ix] : str += ar[ix];
                                        } else
                                            // <? xml ... ?> //
                                            if (ar[ix].search(/<\?/) > -1) {
                                                str += this.shift[deep] + ar[ix];
                                            } else
                                                // xmlns //
                                                if (ar[ix].search(/xmlns\:/) > -1 || ar[ix].search(/xmlns\=/) > -1) {
                                                    str += this.shift[deep] + ar[ix];
                                                }

                else {
                    str += ar[ix];
                }
            }

            return (str[0] == '\n') ? str.slice(1) : str;
        },

        xmlmin: function(text) {
            var str = this.preserveComments ? text :
                text.replace(/\<![ \r\n\t]*(--([^\-]|[\r\n]|-[^\-])*--[ \r\n\t]*)\>/g, "")
                .replace(/[ \r\n\t]{1,}xmlns/g, ' xmlns');
            return str.replace(/>\s{0,}</g, "><");
        },

        json: function(text) {
            if (typeof JSON === 'undefined') return text;
            if (typeof text === "string") {
                return JSON.stringify(JSON.parse(text), null, this.step);
            }
            if (typeof text === "object") {
                return JSON.stringify(text, null, this.step);
            }
            return text; // text is not string nor object
        },

        jsonmin: function(text) {
            if (typeof JSON === 'undefined') {
                return text;
            }
            return JSON.stringify(JSON.parse(text), null, 0);
        },

        css: function(text) {
            var ar = text.replace(/\s{1,}/g, ' ')
                .replace(/\{/g, "{~::~")
                .replace(/\}/g, "~::~}~::~")
                .replace(/\;/g, ";~::~")
                .replace(/\/\*/g, "~::~/*")
                .replace(/\*\//g, "*/~::~")
                .replace(/~::~\s{0,}~::~/g, "~::~")
                .split('~::~'),
                len = ar.length,
                deep = 0,
                str = '',
                ix = 0;

            for (ix = 0; ix < len; ix++) {

                if (/\{/.exec(ar[ix])) {
                    str += this.shift[deep++] + ar[ix];
                } else
                if (/\}/.exec(ar[ix])) {
                    str += this.shift[--deep] + ar[ix];
                } else
                if (/\*\\/.exec(ar[ix])) {
                    str += this.shift[deep] + ar[ix];
                } else {
                    str += this.shift[deep] + ar[ix];
                }
            }
            return str.replace(/^\n{1,}/, '');
        },

        cssmin: function(text) {
            var str = this.preserveComments ? text : text.replace(/\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\//g, "");
            return str.replace(/\s{1,}/g, ' ')
                .replace(/\{\s{1,}/g, "{")
                .replace(/\}\s{1,}/g, "}")
                .replace(/\;\s{1,}/g, ";")
                .replace(/\/\*\s{1,}/g, "/*")
                .replace(/\*\/\s{1,}/g, "*/");
        },

        sql: function(text) {

            var ar_by_quote = text.replace(/\s{1,}/g, " ")
                .replace(/\'/ig, "~::~\'")
                .split('~::~'),
                len = ar_by_quote.length,
                ar = [],
                deep = 0,
                tab = this.step, //+this.step,
                parenthesisLevel = 0,
                str = '',
                ix = 0;

            for (ix = 0; ix < len; ix++) {
                if (ix % 2) {
                    ar = ar.concat(ar_by_quote[ix]);
                } else {
                    ar = ar.concat(split_sql(ar_by_quote[ix], tab));
                }
            }

            len = ar.length;
            for (ix = 0; ix < len; ix++) {

                parenthesisLevel = isSubquery(ar[ix], parenthesisLevel);

                if (/\s{0,}\s{0,}SELECT\s{0,}/.exec(ar[ix])) {
                    ar[ix] = ar[ix].replace(/\,/g, ",\n" + tab + tab + "");
                }

                if (/\s{0,}\s{0,}SET\s{0,}/.exec(ar[ix])) {
                    ar[ix] = ar[ix].replace(/\,/g, ",\n" + tab + tab + "");
                }

                if (/\s{0,}\(\s{0,}SELECT\s{0,}/.exec(ar[ix])) {
                    deep++;
                    str += this.shift[deep] + ar[ix];
                } else
                if (/\'/.exec(ar[ix])) {
                    if (parenthesisLevel < 1 && deep) {
                        deep--;
                    }
                    str += ar[ix];
                } else {
                    str += this.shift[deep] + ar[ix];
                    if (parenthesisLevel < 1 && deep) {
                        deep--;
                    }
                }
            }
            str = str.replace(/^\n{1,}/, '').replace(/\n{1,}/g, "\n");
            return str;
        },

        sqlmin: function(text) {
            return text.replace(/\s{1,}/g, " ").replace(/\s{1,}\(/, "(").replace(/\s{1,}\)/, ")");
        }

    }; //end Formatter.prototype


    /**
     * DOM chaining version
     */
    $.fn.format = function(options) {
        var fmt = new Formatter(options);
        //		var methodName = fmt.options.method;
        //		if (!$.isFunction(fmt[methodName])) {
        //			$.error("'" + methodName + "' is not a Formatter method.")
        //		};
        //		console.log("call " + methodName + " on " + $.type(this));
        //		console.log(this);
        return this.each(function() {
            //			console.log($.type(this));
            //			console.log(this);
            var node = $(this);
            //			console.log($.type(node));
            //			console.log(node);
            var text = node.val();
            //			console.log("text ==>\n" + text);
            text = fmt.format(text);
            node.val(text);
        });
    };

    /**
     * utility version
     */
    $.format = function(text, options) {
        var fmt = new Formatter(options);
        //		var methodName = fmt.options.method;
        //		if (!$.isFunction(fmt[methodName])) {
        //			$.error("'" + methodName + "' is not a Formatter method.")
        //		};
        //		console.log("call " + methodName + " on " + $.type(text));
        //		console.log(text);
        //		return fmt[methodName].call(fmt, text);
        return fmt.format(text);
    };

    /**
     * default configuration
     */
    $.fn.format.defaults = {
        method: 'xml', // the method to be called
        step: '    ', // 4 spaces
        preserveComments: false //applies to cssmin and xmlmin functions
    };


})(jQuery);